Speed-governor.



PATENTBD MAR. 24, 190.3. 0. B. STERNE. SPEED GOVERNOR.

I APPLICATION I'ILI-ED MAX 2. 1901.

N0 MODEL.

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ATTOkA/EY' I UNITED STATES PATENT OFFICE.

CHARLES E. STERNE, OF SAN DIEGO, CALIFORNIA, ASSIGNOR TO STERNE BROS.CO., OF SAN DIEGO, CALIFORNIA, A CORPORA- TION OF CALIFORNIA.

SPEED-GOVERNOR.-

SPECIFICATION forming part of Letters Patent No. 723,417, dated March24, 1903.

" Application filed May 2, 1901- Serial No. 58,529. (No model.) I

To all whom it may concern.

Be it known that I, CHARLES E. STERNE, a citizen of the United States,residing at San Diego, in the county of San Diego and State ofCalifornia, have invented'new and useful Improvements inSpeed-Governors, of which the following is a specification.

Some of the objects of this invention are compactness, simplicity, andcheapness.

Another object of this invention is ease of manufacturing, assembling,and placing-the governor in position on the engine.

The accompanying drawings illustrate my invention.

Figure I isan elevation of my newly-invented governor in p osition on anengine, a fragment of which is shown. The governor slide-valve of theengine, which is to be connected with the governor, is omitted from thisview. Fig. II is a vertical section of the same on line II II, Fig. III,looking in the direction of the arrow. This view is from the right ofFig. I, excepting that the governorweights are turned a quarter-turnfrom the position shown in Fig. I. The post or wristpin of the governorslide-valve of the engine is shown in section. Fig. III is a plan of thegovernor. A fragment of the slide-valve connection is shown. Fig. IV isva detail on a larger scale illustrating the tension device of thegovernor-weight spring.

1 indicates the rotary spindle.

collar.

4: indicates sleeve operating levers fulcrumed to the spindle by pins 5and respectively weighted at one arm, as indicated by the balls 6.

7 indicates yielding means for drawing the weights 6 of the leverstoward the axis of rotation. Such means may be of. any suitable form,but preferably consists of a coil-spring, as shown in the drawings. Theupper end of the spindle is preferably grooved circumferentially for thereception of the weighted portions of the levers or balls 6. The portionof the spindle above the groove can be turned or finished in anyartistic manner, as shown in the drawings.

2 indicates a sliding sleeve to rotate with said spindle.

3 indicates a spline between the shaft and 8 indicates theregulator-operating means connected with the sleeve, to be operatedthereby. Such'means in the form of engine shown preferably consists in abent lever, one end of which is forked, as shown at 9, to removably fitupon the post or wrist-pin 10 of the slide-valve 11. The upper end ofthe sleeve 2 rests against a shoulder formed upon the spindle below thepivots 5.

12 indicates yieldingmeans for holding the sleeve against the shoulderand normally out of contact with but in the path of the sleeveoperatingarms 13 of said levers 4:.

By providing a shoulder 25 upon the spindle, whereby the sleeve isnormally held out of contact with the short arms of the weighted levers,a finer adjustment of the governor is secured, as the spring 7 can bemade of only sufficient strengt'nto return the balls to their normalposition after the engine has stopped, and the main portion of theresistance to the outward movement of the balls can be taken up andborne by the spring 12,which may be made adjustable. By constructing theparts in this manner the machine to which the governor is applied mayberun up to any desired speed before the outward movement of the weightswill cause the shorter arms to come into contact with the sleeve andcause it to beginto move the controlling mechanism, as the shut-0E orthrottle.

The means 7 for drawing the weights of the lovers toward the axis ofrotation is adjustable as to tension by means of screws 14:, which screwthrough the weighted balls 6 and are furnished on their inner ends,respectively, with eyes 15, in which the ends of the coil-spring 7 arecaught.

16 indicates a cylindrical nut seated in cylindrical seats 17, in ,whichthe nuts turn freely. Said nuts are screwed into the screws 14',respectively, and preferably are each pro-' vided with a slot 18 for ascrew-driver, by which the nuts can be turned. The-inner ends of thenuts and their respective seats in the sockets are preferably ratchetshape to prevent unscrewing. I

19 indicates recesses in the balls 6 to avoid contact of the balls withthe spring 7.

The yielding means 12 for holding the sleeve in the path of the arms 13of the levers is preferably adjustable, as indicated by thescrewthreaded connectingrod 20, which slides through the bracket 21 andis secured by the nut 22.

The spindle 1 is grooved or slotted longitudinally, as indicated at 23,and the bent levers 4 are mounted in said grooves and fulcru'med attheir angles in said groove by the pins 5. The spring 7 preferablyextends through the groove and is therefore out of the way and concealedfrom view. The spring is attached to the balls substantially in linewith the centers thereof and at right angles to the axes of pivots 5, sothat the tension upon the balls and levers and the fulcruming-pins 5 iseven and true.

In practice the spindle l is preferably made of a cylindrical steelshaft which is turned throughout, the groove 23 and the spline-seat 24being milled. The spindle is appropriately shouldered at a and b onopposite sides of the bearing 0 of the bracket 21,1which sup ports thespindle. (1 indicates an antifriction-washer between the shoulder 19 andthe bearings. eindicates thepiniou,fitted against the shoulder a and bywhich the spindle is driven. The end of the spindle is screw threaded,and the pinion e is secured on the lower end of the spindle by the nutf.

The portions of the spindle between the different shoulders are eachcylindrical with each succeeding cylinder away from the slotted portionof a less diameter than the preceding one and the tip of the smallercylinder adapted to receive a fastener. After the weighted levers havebeen secured in the upper ends of the spindle the parts may be assembledin operative position by passing the lower end of the spindle throughthe sleeve and through the bearing and then securing the pinion upon theend beyond the bearing by means of the nut or other fastener. Thisrenders the device cheap of construction, easy toassemble, and verysensitive and efficient in its operation.

By controlling the weighted levers with one spring and the throttlingmechanism with another and adjusting each spring independently of theother the governor can be set to not begin to operate the throttlingmechanism until after the engine has attained any desired speed, andafter that it can only move the same with the desired rate of speed towhich the throttle has been adjusted. This permits of the governor beingapplied to various kinds or styles of engine and adapting it to thedifferent kinds or classes of work which the engine may be called uponto perform.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

1. A speed-governor comprising a rotary spindle; a sliding sleeve torotate with said spindle; sleeve-operating levers fulcrumed to thespindle and respectively weighted at one arm; yielding means for drawingthe weights of the levers toward the axis of rotation;regulator-operating means connected with said sleeve to be operatedthereby; and means for holding said sleeve normally out of contact withbut in the path of the sleeve-operating arms of said levers.

, 2. A speed-governor comprising a. rotary spindle; a sliding sleeve torotate with said spindle; sleeve-operating levers fulcrumed to thespindle and respectively weighted at one arm; adjustable yielding meansfor drawing the weights of the levers toward the axis of rotation; astop for limiting the movement of the sleeve toward and normally holdingit out of contact with said levers, and regulatoroperating meansconnected with said sleeve to be operated thereby.

8. In a speed-governor, the combination of the grooved rotating spindle;the weighted bent levers fulcru med in said groove and fur nishedrespectively with sockets and with openings for a tension-spring and itsfastenings; nutsrespectively seated in said sockets; screws in saidnuts; and a tension-spring through the groove between the weights andfastened to said screws.

4. Ina speed governor, the combination of the grooved rotating spindle;the weighted bent levers f ulcru med in said groove and furnishedrespectively with sockets and with openings for a tension-spring and itsfastenin gs; nuts respectively seated in said sockets; screws in saidnuts; and a tension-spring between the weights and fastened to saidscrews, the nuts being furnished with ratchet-teeth, substantiallyas setforth.

5. In a speed-governor, a rotary spindle provided with weighted levers,yielding mechanism connected with said levers to prevent their outwardmovement, yielding enginecontrolling mechanism in position to beoperated by, but normally out of, contact with said levers, and meansfor adjusting each of said mechanisms independently of the other.

6. In a speed-governor, an exteriorly-shouldered rotary spindle, theupper portion of which is provided with weighted levers and the portionsbetween the shoulders are each cylindrical, each cylinder toward thelower 'end being of a less diameter than the one above it, a sleevebetween the upper shoulders, in the path of, but normally out of contactwith, the levers, a bearing between the intermediate shoulders, a pinionremovably secured below the lower shoulder, and engine-controllingmechanism connected with the sleeve.

7. In a speedgovernor, a rotary spindle, theupper portion of which isslotted longitudinally near its upper end and grooved circumferentiallyat the upper end of the slot, a pair of bent levers pivotally mounted inthe lower portion of the slot, the upper end of each lever beingprovided with a spherical weighted portion adapted to normally rest inthe groove, a spring secured at its ends to said weights and passedloosely through said slot, a support, and a sleeve on the spindle forengaging with an operating engine-controlling mechanism.

8. A new article of manufacture, an exteteriorly-shouldered spindle forspeed-governors, the portion of which adjacent to one end is slottedlongitudinally and is exteriorly grooved at the outer end of the slot,and the portion adjacent to the other end of the slot is perforatedtransversely, the portions of the spindle between the shoulders, and thelast shoulder and one end each being cylindrical,

